EP0252049A2 - Brazed article of coated cemented carbide or coated ceramics - Google Patents

Brazed article of coated cemented carbide or coated ceramics Download PDF

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Publication number
EP0252049A2
EP0252049A2 EP87850207A EP87850207A EP0252049A2 EP 0252049 A2 EP0252049 A2 EP 0252049A2 EP 87850207 A EP87850207 A EP 87850207A EP 87850207 A EP87850207 A EP 87850207A EP 0252049 A2 EP0252049 A2 EP 0252049A2
Authority
EP
European Patent Office
Prior art keywords
coated
cemented carbide
ceramics
brazing
brazed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP87850207A
Other languages
German (de)
French (fr)
Other versions
EP0252049A3 (en
Inventor
Roland Östen Pettersson
Jan Gustav Edvardsson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sandvik AB
Original Assignee
Sandvik AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sandvik AB filed Critical Sandvik AB
Publication of EP0252049A2 publication Critical patent/EP0252049A2/en
Publication of EP0252049A3 publication Critical patent/EP0252049A3/en
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B37/00—Joining burned ceramic articles with other burned ceramic articles or other articles by heating
    • C04B37/02—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles
    • C04B37/023—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles characterised by the interlayer used
    • C04B37/026—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles characterised by the interlayer used consisting of metals or metal salts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
    • B23B27/18—Cutting tools of which the bits or tips or cutting inserts are of special material with cutting bits or tips or cutting inserts rigidly mounted, e.g. by brazing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
    • B23K31/025—Connecting cutting edges or the like to tools; Attaching reinforcements to workpieces, e.g. wear-resisting zones to tableware
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/001—Interlayers, transition pieces for metallurgical bonding of workpieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/002—Drill-bits
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/02—Aspects relating to interlayers, e.g. used to join ceramic articles with other articles by heating
    • C04B2237/04—Ceramic interlayers
    • C04B2237/08—Non-oxidic interlayers
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/02—Aspects relating to interlayers, e.g. used to join ceramic articles with other articles by heating
    • C04B2237/04—Ceramic interlayers
    • C04B2237/08—Non-oxidic interlayers
    • C04B2237/083—Carbide interlayers, e.g. silicon carbide interlayers
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/02—Aspects relating to interlayers, e.g. used to join ceramic articles with other articles by heating
    • C04B2237/12—Metallic interlayers
    • C04B2237/125—Metallic interlayers based on noble metals, e.g. silver
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/32—Ceramic
    • C04B2237/36—Non-oxidic
    • C04B2237/368—Silicon nitride
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/40—Metallic
    • C04B2237/405—Iron metal group, e.g. Co or Ni
    • C04B2237/406—Iron, e.g. steel
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/70—Forming laminates or joined articles comprising layers of a specific, unusual thickness
    • C04B2237/708—Forming laminates or joined articles comprising layers of a specific, unusual thickness of one or more of the interlayers
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/72—Forming laminates or joined articles comprising at least two interlayers directly next to each other
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/76—Forming laminates or joined articles comprising at least one member in the form other than a sheet or disc, e.g. two tubes or a tube and a sheet or disc

Definitions

  • the present invention relates to articles in which coated elements of cemented carbide and/or ceramics have been joined to a holder, usually a steel body, by means of con­ventional brazing or soldering technique.
  • the task of the elements in the articles is to cut a different material and/or to resist water.
  • the invention relates among other things to such articles, characterized in, that they before the brazing to the steel body have been coated with one or more wear resistant sur­face layers of metal-carbides,-nitrides,-oxides or mixtures or compounds thereof, at which the outermost layer shall preferably be a carbide, nitride or carbonitride.
  • the coat­ing by CVD- or PVD-technique is the same as what is being used to increase the wear resistance of conventional, mechanically clamped cemented carbide indexable cutting inserts.
  • the difficulties of brazing ceramic elements to steel parts are well known. Usually vacuum technique is used having special solders with additions of active elements. For such elements which per se already have an excellent wear resistance the coating is primarily applied for making them brazable by conventional brazing technique which charac­terizes the manufacture of the articles according to the invention.
  • the ceramic materials can be based upon oxides, nitrides or carbides or mixtures thereof. Examples of ceram­ic materials, on which the invention can be applied, are oxide ceramics (for example based upon Al2O3 or ZrO2) and so called mixed ceramics (oxides mixed with one or more hard carbides, nitrides and similar and possibly binder metal).
  • silicon nitride based ceramics in particular so called sialon materials (silicon nitride where silicon and nitrogen are substituted by aluminium and oxygen), silicon carbide ceramics (SiC with sintering aids such as carbon, boron or aluminium or reaction sintered SiC), B4C, whisker reinforced ceramics (in particular, Al2O3 with whiskers of SiC may be mentioned) and superhard materials based on polycrystalline diamond or cubic boron nitride.
  • sialon materials silicon nitride where silicon and nitrogen are substituted by aluminium and oxygen
  • SiC with sintering aids such as carbon, boron or aluminium or reaction sintered SiC
  • B4C silicon carbide ceramics
  • whisker reinforced ceramics in particular, Al2O3 with whiskers of SiC may be mentioned
  • superhard materials based on polycrystalline diamond or cubic boron nitride.
  • Examples of products where the invention is applicable are cutting inserts for chipforming machining such as turning, milling or drilling sealing rings, support ribs, nozzles, motor details etc.
  • Other examples are drills for long hole drilling having brazed cutting inserts and supporting pads and helical drills with CVD-coated cemented carbide inserts, in particular so called delta drills.
  • the invention has been found particularly suitable for sup­port ribs of sialon and drills with cemented carbide inserts coated with preferably TiC-TiN-layers.
  • the coated cemented carbide and/or ceramic articles are brazed by conventional solder­ing technique used in industry.
  • the solder can for example be a silver solder of type Argobraze and the flux of type Easyflo flux 650.
  • metal shims of for example copper within the slot or recess in order to reduce the transition of thermo­mechanical stresses from the steel to the ceramics, which otherwise may lead to formation of cracks within the ceramic material.
  • An alternative according to the invention is to grind a more or less regular pattern, for example a check pattern in the surface to be brazed after the coating of the ceramic article. In this way a poor wetting and an inferior brazing joint will be obtained in the ground areas which reduces the transition of the above mentioned stress­es.
  • a suitable pattern can be obtained dur­ing the coating by means of masking with for example a net of a suitable material.
  • Support ribs of sialon were CVD coated with 3 ⁇ m TiC/TiN/TiC and then brazed on cutting heads of ejector drills. Because of its size such a support rib is sensitive to formation of cracks caused by thermal stresses. On some ribs a check pattern was therefore ground on the surface to be brazed. Metallographical examinations after the brazing showed that the support ribs with check pattern had an essentially smaller number of cracks than ribs without a check pattern.

Abstract

Disclosed are articles in which coated elements of cemented carbide or ceramics have been joined to a holder by means of conventional brazing or soldering technique.

Description

  • The present invention relates to articles in which coated elements of cemented carbide and/or ceramics have been joined to a holder, usually a steel body, by means of con­ventional brazing or soldering technique. The task of the elements in the articles is to cut a different material and/or to resist water.
  • Since long time there have been available cutting tools with uncoated cemented carbide inserts and wear parts with uncoated cemented carbide articles brazed to a steel body. The invention relates among other things to such articles, characterized in, that they before the brazing to the steel body have been coated with one or more wear resistant sur­face layers of metal-carbides,-nitrides,-oxides or mixtures or compounds thereof, at which the outermost layer shall preferably be a carbide, nitride or carbonitride. The coat­ing by CVD- or PVD-technique is the same as what is being used to increase the wear resistance of conventional, mechanically clamped cemented carbide indexable cutting inserts. In the same way the wear resistance of the brazed tools is increased by coating of the cemented carbide ele­ments before the brazing. It is also known that the life of uncoated brazed cemented carbide tools can be increased by coating the entire tools by means of PVD-technique. Conven­tional solders stand the coating temperatures which are necessary. On the other hand, conventional CVD-technique can not be used for coating at such low temperatures as available solders demand. Coating by CVD-technique gives more wear resistant layers, however, and the manufacturing can be done at lower costs.
  • The difficulties of brazing ceramic elements to steel parts are well known. Usually vacuum technique is used having special solders with additions of active elements. For such elements which per se already have an excellent wear resistance the coating is primarily applied for making them brazable by conventional brazing technique which charac­terizes the manufacture of the articles according to the invention. The ceramic materials can be based upon oxides, nitrides or carbides or mixtures thereof. Examples of ceram­ic materials, on which the invention can be applied, are oxide ceramics (for example based upon Al₂O₃ or ZrO₂) and so called mixed ceramics (oxides mixed with one or more hard carbides, nitrides and similar and possibly binder metal). Other examples are silicon nitride based ceramics, in particular so called sialon materials (silicon nitride where silicon and nitrogen are substituted by aluminium and oxygen), silicon carbide ceramics (SiC with sintering aids such as carbon, boron or aluminium or reaction sintered SiC), B₄C, whisker reinforced ceramics (in particular, Al₂O₃ with whiskers of SiC may be mentioned) and superhard materials based on polycrystalline diamond or cubic boron nitride.
  • Examples of products where the invention is applicable, are cutting inserts for chipforming machining such as turning, milling or drilling sealing rings, support ribs, nozzles, motor details etc. Other examples are drills for long hole drilling having brazed cutting inserts and supporting pads and helical drills with CVD-coated cemented carbide inserts, in particular so called delta drills.
  • The invention has been found particularly suitable for sup­port ribs of sialon and drills with cemented carbide inserts coated with preferably TiC-TiN-layers.
  • According to the invention the coated cemented carbide and/or ceramic articles are brazed by conventional solder­ing technique used in industry. The solder can for example be a silver solder of type Argobraze and the flux of type Easyflo flux 650.
  • At the brazing of large ceramic articles there are often placed metal shims of for example copper within the slot or recess in order to reduce the transition of thermo­mechanical stresses from the steel to the ceramics, which otherwise may lead to formation of cracks within the ceramic material. An alternative according to the invention is to grind a more or less regular pattern, for example a check pattern in the surface to be brazed after the coating of the ceramic article. In this way a poor wetting and an inferior brazing joint will be obtained in the ground areas which reduces the transition of the above mentioned stress­es. Alternatively, a suitable pattern can be obtained dur­ing the coating by means of masking with for example a net of a suitable material.
    • Example 1
  • To a cutting head of an ejector drill (Swedish patent 196 526) conventional cemented carbide cutting inserts with­in the ISO ranges P10-P40 were brazed. The inserts were coated before the brazing with 6µm TiC or TiN/TiC/TiN by means of CVD according to standard procedure. At the braz­ing there were used Easyflo flux 650 and the silver solder Argobraze. Some boring heads were cut by means of a section through steel, brazing joint and cutting insert. The surfac­es being cut were ground and polished and analysed in a light optical microscope. The wetting between the coating upon the cemented carbide and the solder was found to be very good. Subsequent drilling tests showed that the strength of the joints was sufficient for the function of the drills.
    • Example 2
  • To cutting heads of ejector drills there were brazed cut­ting inserts, ISO P15, CVD-coated with 5µm TiC+3µm Al₂O₃ and outermost a few tenths of a µm TiN accord­ing to Example 1. Metallographic examinations showed that also in this case the wetting (filler metal) solder - coat­ing was as excellent as in the preceding example.
    • Example 3
  • Support ribs of sialon were CVD coated with 3µm TiC/TiN/TiC and then brazed on cutting heads of ejector drills. Because of its size such a support rib is sensitive to formation of cracks caused by thermal stresses. On some ribs a check pattern was therefore ground on the surface to be brazed. Metallographical examinations after the brazing showed that the support ribs with check pattern had an essentially smaller number of cracks than ribs without a check pattern.

Claims (4)

1. A tool for chipforming machining or a wear part comprising a sintered body of cemented carbide or ceramics which has been joined to a holder or similar by conventional brazing or soldering,
characterized in, that said sintered body has been coated with one or more wear resistant layers before the brazing or soldering.
2. A tool according to claim 1, characterized in, that a metal shim has been placed in the brazing or soldering joint.
3. A tool according to any of the preceding claims, characterized in, that said sintered body is of ceramic material, at which the ceramic material has been partly exposed on the surface to be brazed or sol­dered in a more or less regular pattern.
4. A tool according to claim 3, characterized in, that the ceramic material has been exposed by means of grinding.
EP87850207A 1986-06-27 1987-06-24 Brazed article of coated cemented carbide or coated ceramics Withdrawn EP0252049A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8602885A SE8602885L (en) 1986-06-27 1986-06-27 BASED DETAIL IN HARD METAL OR CERAMICS
SE8602885 1986-06-27

Publications (2)

Publication Number Publication Date
EP0252049A2 true EP0252049A2 (en) 1988-01-07
EP0252049A3 EP0252049A3 (en) 1989-10-25

Family

ID=20364959

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87850207A Withdrawn EP0252049A3 (en) 1986-06-27 1987-06-24 Brazed article of coated cemented carbide or coated ceramics

Country Status (3)

Country Link
EP (1) EP0252049A3 (en)
JP (1) JPS6328501A (en)
SE (1) SE8602885L (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2672829A1 (en) * 1991-02-19 1992-08-21 Nitruvid METHOD FOR REALIZING A BRAZING LINK BETWEEN TWO PIECES, IN PARTICULAR A CERAMIC PIECE AND A METAL PIECE, AND WELDED ASSEMBLY PRODUCED BY THIS PROCESS.
EP1543217B1 (en) * 2003-08-15 2007-11-14 Sandvik Intellectual Property AB Rotary cutting bit with material-deflecting ledge
WO2021032249A1 (en) * 2019-08-20 2021-02-25 formwerk GmbH Method of manufacturing a mold insert for the production of moldings, and mold insert and its use

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0196073A (en) * 1987-10-08 1989-04-14 Sumitomo Electric Ind Ltd Method for brazing diamond
JPWO2014006718A1 (en) * 2012-07-05 2016-06-02 有限会社クローバーテック Cutting tool manufacturing method and cutting tool using the same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2127162A1 (en) * 1970-06-26 1971-12-30 Sandvikens Jernverks Ab Use for cutting steel, cast iron or similar material
US3667099A (en) * 1970-07-31 1972-06-06 Du Pont Method of securing dense, metal-bonded refractory nitride bodies to steel and product
DE1646934B2 (en) * 1965-07-23 1974-01-03 Rosenthal Ag, 8672 Selb
DE3248023C1 (en) * 1982-12-24 1984-05-10 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe Process for making a soldered joint
EP0208842A2 (en) * 1985-06-12 1987-01-21 Kernforschungszentrum Karlsruhe Gmbh Method for linking two work pieces

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1646934B2 (en) * 1965-07-23 1974-01-03 Rosenthal Ag, 8672 Selb
DE2127162A1 (en) * 1970-06-26 1971-12-30 Sandvikens Jernverks Ab Use for cutting steel, cast iron or similar material
US3667099A (en) * 1970-07-31 1972-06-06 Du Pont Method of securing dense, metal-bonded refractory nitride bodies to steel and product
DE3248023C1 (en) * 1982-12-24 1984-05-10 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe Process for making a soldered joint
EP0208842A2 (en) * 1985-06-12 1987-01-21 Kernforschungszentrum Karlsruhe Gmbh Method for linking two work pieces

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2672829A1 (en) * 1991-02-19 1992-08-21 Nitruvid METHOD FOR REALIZING A BRAZING LINK BETWEEN TWO PIECES, IN PARTICULAR A CERAMIC PIECE AND A METAL PIECE, AND WELDED ASSEMBLY PRODUCED BY THIS PROCESS.
EP0500454A1 (en) * 1991-02-19 1992-08-26 Nitruvid Brazing method for binding two workpieces, in particular a ceramic one and a metallic one, and product therefore
EP1543217B1 (en) * 2003-08-15 2007-11-14 Sandvik Intellectual Property AB Rotary cutting bit with material-deflecting ledge
WO2021032249A1 (en) * 2019-08-20 2021-02-25 formwerk GmbH Method of manufacturing a mold insert for the production of moldings, and mold insert and its use

Also Published As

Publication number Publication date
SE8602885L (en) 1987-12-28
SE8602885D0 (en) 1986-06-27
EP0252049A3 (en) 1989-10-25
JPS6328501A (en) 1988-02-06

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RIN1 Information on inventor provided before grant (corrected)

Inventor name: EDVARDSSON, JAN GUSTAV

Inventor name: PETTERSSON, ROLAND OESTEN